Chapter 20, Problem 26A

(a)

Interpretation Introduction

Interpretation:

The given chemical equation is to be completed and balanced.

Concept Introduction:

Combustion reactionisa chemical reaction when a substance is reacted with oxygen gas. The heat is evolved in this reaction.

Answer to Problem 26A

  ${\mathrm{C}}_6{\mathrm{H}}_{14}(\mathrm{l})+\left(19/2\right){\mathrm{O}}_2(\mathrm{g})\to 6\mathrm{C}{\mathrm{O}}_2(\mathrm{g})+7{\mathrm{H}}_2\mathrm{O}(\mathrm{l})$

Explanation of Solution

Combustion reaction is a chemical reaction when a substance is reacted with oxygen gas. The heat is evolved in this reaction. In the given reaction, formation of carbon dioxide and water takes place.${\mathrm{C}}_6{\mathrm{H}}_{14}(\mathrm{l})+\left(19/2\right){\mathrm{O}}_2(\mathrm{g})\to 6\mathrm{C}{\mathrm{O}}_2(\mathrm{g})+7{\mathrm{H}}_2\mathrm{O}(\mathrm{l})$

(b)

Interpretation Introduction

Interpretation:

The given chemical equation is to be completed and balanced.

Concept Introduction:

Substitution reaction is defined as one type of chemical reaction when one atom or one group in a compound is replaced by another atom or group. When a hydrogen atom in an alkane is replaced by a halogen atom (Cl, Br, I) is called halogenation.

Answer to Problem 26A

  $\mathrm{C}{\mathrm{H}}_4+\mathrm{C}{\mathrm{l}}_2\stackrel{\mathrm{h}\mathrm{\upsilon }}{\to }\mathrm{C}{\mathrm{H}}_3\mathrm{C}\mathrm{l}+\mathrm{H}\mathrm{C}\mathrm{l}$

Explanation of Solution

When a hydrogen atom in an alkane is replaced by a halogen atom (Cl, Br, I) , the reaction is called halogenation. When methane is treated with chlorine gas, methyl chloride is formed along with hydrochloric acid.

  $\mathrm{C}{\mathrm{H}}_4+\mathrm{C}{\mathrm{l}}_2\stackrel{\mathrm{h}\mathrm{\upsilon }}{\to }\mathrm{C}{\mathrm{H}}_3\mathrm{C}\mathrm{l}+\mathrm{H}\mathrm{C}\mathrm{l}$

(c)

Interpretation Introduction

Interpretation:

The given chemical equation is to be completed and balanced.

Concept Introduction:

Substitution reaction is defined as one type of chemical reaction when one atom or one group in a compound is replaced by another atom or group. When a hydrogen atom in an alkane is replaced by a halogen atom (Cl, Br, I) is called halogenation.

Answer to Problem 26A

  $\mathrm{C}\mathrm{H}\mathrm{C}{\mathrm{l}}_3+\mathrm{C}{\mathrm{l}}_2\stackrel{\mathrm{h}\mathrm{\upsilon }}{\to }\mathrm{C}\mathrm{C}{\mathrm{l}}_4+\mathrm{H}\mathrm{C}\mathrm{l}$

Explanation of Solution

When a hydrogen atom in an alkane is replaced by a halogen atom (Cl, Br, I) is called halogenation.When carbontrichloride is treated with chlorine gas, carbontetrachloride is formed along with hydrochloric acid.

  $\mathrm{C}\mathrm{H}\mathrm{C}{\mathrm{l}}_3+\mathrm{C}{\mathrm{l}}_2\stackrel{\mathrm{h}\mathrm{\upsilon }}{\to }\mathrm{C}\mathrm{C}{\mathrm{l}}_4+\mathrm{H}\mathrm{C}\mathrm{l}$